The Spectre then drags the Anti-Monitor's hand back, preventing him from changing history and closing his sole window of opportunity, buying valuable time for the heroes.
His skill and creativity in killing without killing. Nightmare Fuel? Sure. Awesome? Works just as well!
Police Officer Nate Kane managing to temporarily resist the Spectre's punishment while in his own soul through sheer force of will. Even spewing forth a Badass Boast in defiance. Keep in mind the only other person who was shown to do so was the Joker due to a combination of the Joker's insanity and the Spectre being weakened at the time.
Killing the Serial Rapist Dr. Light while he was in the middle of assaulting some prostitutes dressed as the Teen Titans is a moment that had many a fan cheering.
In DC Comics Presents issue #29, Silver Age Superman is trying to find Supergirl, who has just gone missing. He flies so fast than he breaks the bounds of reality and is stopped by the Spectre. Superman tries to fight him, but the Spectre completely No Sells his power — Silver Age Superman's power! — then teaches him a lesson about power and responsibility and help him find Kara. Oh, and God, — yes, God! — talks to Superman◊ and calls him "a good and faithful son".
His appearance in the post movie comic for Suicide Squad: Hell to Pay has him reduce Amanda Waller to gibbering fear when he tells her she's coming straight to Hell. Very soon.
War World saw the Spectre dish a Curb-Stomp Battle against Superman. The Man of Steel punches the Spectre but soon realizes he can't hurt him and tries to flee, only for the Spectre to teleport right in front of him. The Spectre even points out that he doesn't feel a thing from Superman's blows, comparing them to "the whisper of snowflakes."